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Re: [Bug-gnulib] ABS macro

From: Paul Eggert
Subject: Re: [Bug-gnulib] ABS macro
Date: Thu, 01 Jul 2004 10:38:10 -0700
User-agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/21.3 (gnu/linux)

Oskar Liljeblad <address@hidden> writes:

> Some time ago I wrote to this list about the lack of an ABS
> (absolute value) macro.

Hmm, I looked at the archives, and I didn't see any followup to the
following somewhat-skeptical comment about ABS:

  ... why not use the absolute-value functions of stdlib.h, inttypes.h,
  math.h and tgmath.h?  Admittedly they're a bit of a mess (abs, labs,
  llabs, imaxabs, fabs, fabsf, fabsl, etc.), but they're the standard
  way to do it.  And they should do the right thing with NaNs and -0.0,
  whereas the macro won't.

  -- <http://lists.gnu.org/archive/html/bug-gnulib/2003-09/msg00270.html>

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